Multicore fiber sensor for high-temperature applications up to 1000°C

A novel high temperature sensor based on customized multicore fiber (MCF) is proposed and experimentally demonstrated. The sensor consists of a short, few-centimeter-long segment of MCF spliced between two standard single-mode fibers. Due to interference effects, the transmission spectrum through th...

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Veröffentlicht in:Optics letters 2014-08, Vol.39 (15), p.4309-4312
Hauptverfasser: Antonio-Lopez, J Enrique, Eznaveh, Zeinab Sanjabi, LiKamWa, Patrick, Schülzgen, Axel, Amezcua-Correa, Rodrigo
Format: Artikel
Sprache:eng
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Zusammenfassung:A novel high temperature sensor based on customized multicore fiber (MCF) is proposed and experimentally demonstrated. The sensor consists of a short, few-centimeter-long segment of MCF spliced between two standard single-mode fibers. Due to interference effects, the transmission spectrum through this fiber chain features sharp and deep notches. Exposing the MCF segment to increasing temperatures of up to 1000°C results in a shift of the transmission notches toward longer wavelengths with a slope of approximately 29  pm/°C at lower temperatures and 52  pm/°C at higher temperatures, enabling temperature measurements with high sensitivity and accuracy. Due to its compact size and mechanical rigidity, the MCF sensor can be subjected to harsh environments. The fabrication of the MCF sensor is straightforward and reproducible, making it an inexpensive fiber device.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.39.004309